3 Pcs A Lot :3BK 3X HP940 Black Ink Cartridge 1. Pls do not compare the compatible ink cartridge with OEM ink cartridge. 2. Re-manufactued ink cartridge show "low ink" is not quality problems, it is normally; Because the chip are still keep the status when the OEM ink cartridge used up. 3: when you buy compatible ink cartridge, pls noted your printer updated or not? If yes, pls contact us before your purchase. 4: we will deliver the parcel in the first time. 5: We guaranteed your satisfaction is always in our first priority. 6: Hope you can contact us in the first time if you have a